If you have e-filed your return and you do not receive your tax refund within a reasonable time You should check the year for which you want a refund, whether your ITR-V has been sent to CPC, Bangalore or e-verified.

In case ITR-V is already verified, but still there is delay, you can follow up with the Centralized Processing Center (CPC) of the Income-tax Department on 1800 103 4455 or +91-80-46605200 (Monday to Friday between 8 am to 8 pm).

If your return pertains to previous years, where you had filed your return manually then you can write a letter to the Jurisdictional Assessing Officer. Also, attach your Income tax return copies with such letter.